Whiteboard Practice

When and how whiteboarding practice is implemented will be up to your teacher. Below is a recommended prompt.

Goal

For this week’s whiteboarding lesson, we’ll focus on using arrays and loops to assess a string.

As the interviewee:

Ask clarifying questions.

Keep talking.

Explain your plan at the beginning; recap what you’ve done at the end.

Make eye contact.

Plan your space.

As the interviewer:

Answer questions as best as you can.

Be encouraging. Whiteboarding is difficult!

Be patient. Only offer hints if your partner indicates that they need help.

Be engaged. Part of this practice is getting used to having someone evaluate your work as your produce it.

Offer constructive feedback. Find at least one thing that your partner did well and one thing they could improve at.

Problem

Prompt: Write a function that takes in an array of numbers and a number (n) and returns the array with the multiples of n removed.

Example:

Given: [ 1, 9, 6, 1, 3, 10, 12, 99, 2] , 3

Return: [ 1, 1, 10, 2 ]

Further Exploration

Alter your function such that it takes a third parameter called choice. If choice is "multiples", then the function should behave as normal. If choice is factors, numbers that are factors of n should be removed from the array. (i.e. Given: [ 1, 9, 6, 1, 3, 10, 12, 99, 2] , 12, "factors"; Return: [ 9, 10, 99 ]). You should create a helper function to keep your code organized.